title: Structure of GeSe4-In and GeSe5-In glasses.
abstract: (Ge(0.2)Se(0.8))(100-x)In(x) and (Ge(0.17)Se(0.83))(100-x)In(x) (x = 0, 5, 10, 15 at.%) chalcogenide glasses have been studied with high-energy x-ray diffraction, neutron diffraction and extended x-ray absorption spectroscopy at Ge, Se and In K-edges. The experimental data were modelled simultaneously with the reverse Monte Carlo simulation method. GeSe(4/2) tetrahedra are shown to be the main structural units in the binary and ternary glasses investigated. Indium bonds to the excess Se atoms in the ternary Ge-Se-In glasses. While the majority of In atoms have three Se neighbours, some In atoms may be tetrahedrally coordinated by Se.
authors.affiliation: Institute of Physics, Chemnitz University of Technology, D-09107 Chemnitz, Germany. ivan.kaban@physik.tu-chemnitz.de
authors.forename: I
authors.initials: I
authors.lastname: Kaban
authors.forename: P
authors.initials: P
authors.lastname: Jóvári
authors.forename: T
authors.initials: T
authors.lastname: Petkova
authors.forename: P
authors.initials: P
authors.lastname: Petkov
authors.forename: A
authors.initials: A
authors.lastname: Stoilova
authors.forename: W
authors.initials: W
authors.lastname: Hoyer
authors.forename: B
authors.initials: B
authors.lastname: Beuneu
mesh_terms: D003198:Computer Simulation; D005857:Germanium / Q000737:chemistry*; D005898:Glass / Q000737:chemistry*; D007204:Indium / Q000737:chemistry*; D008956:Models, Chemical; D009010:Monte Carlo Method; D012643:Selenium / Q000737:chemistry*; D056928:X-Ray Absorption Spectroscopy; D014961:X-Ray Diffraction
chemical_list: D005857:Germanium; D007204:Indium; D012643:Selenium